Wallan, traditionally known as Wallan Wallan, is a town located in the state of Victoria, Australia. It is situated approximately 45 kilometres north of Melbourne's Central Business District and sits at the southern end of the Shire of Mitchell. This shire extends from the northern fringes of Melbourne into the farming regions of north-central Victoria and the lower Goulburn Valley.
The township is positioned along the Hume Freeway and is set against the backdrop of the Great Dividing Range. As of the 2021 census, Wallan had a population of 15,004 residents.